granted FII is is south of LIS.

" The USS San Diego left the water of the Pacific Ocean and entered the
Atlantic Ocean via the Panama Canal for the first time during July 1917. She
served in the Atlantic as a convoy escort, at one time stopping at the port in
La Croisie, France. After removal of some of her 6-inch guns in Portsmouth, New
Hampshire, the San Diego steams to New York to meet up with a transatlantic
convoy. At 11:05 a.m. most the crew of the San Diego felt a dull thud which
originated from the port side engine room. The crew that worked in this area
must have experienced a large explosion as bulkheads were smashed in. The ocean
soon followed and within 20 minutes the USS San Diego gently rolled over and
was gone, along with six of her crew. It is amazing that 1,177 of the ship's
crew and officers were able to abandon ship in a such a short time.
The German submarine U.156 is credited with sinking the USS San Diego. The
submarine laid mines in the area where the cruiser was lost. Unfortunately we
will never know the details of the U.156 operations, as the submarine was sunk
on her return voyage after entering a mine field.
The USS San Diego today lies upside down about eleven miles southeast of
Fire Island inlet, Long Island, New York at Loran 26543.4 43693.2 in 115 feet
of sea water. "